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$(document).ready(function() {
// Select the div element
var $div = $('#myDiv');
// Change the text content
$div.text('New Text');
});
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$(yourElement).html("New text");
//sets yourElement innerHTML to "New text"
var text = $(yourElement).html();
//html() returns the text inside yourElement if you pass no parameters
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// (Note: this will change text in all H1 Elements)
$('h1').text("good bye");